There two ways to sync the processed transactions from Rerun to QuickBooks Online.

1. Click on the Sync button at the bottom of the Dashboard, Payments, Activity, or Settings tab. This will sync all items, taxes, customers, as well as to export processed transactions.
2. On the settings tab, click the Export Transactions option.  This will sync only the processed transactions.

Please Note: the area to the right of each sync option will show the last time